1. Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
2. School of Agriculture, Policy and Development, University of Reading, Reading, UK
3. Department of Animal Ecology and Tropical Biology, Biocentre, University of Würzburg, Würzburg, Germany
4. INRA, UR406 Abeilles & Environnement, Avignon, France
5. Institute of Environmental Sciences, Jagiellonian University, Gronostajowa, Krakow, Poland
6. Department of Crop Science, Agroecology, Georg-August-University, Göttingen, Germany
7. Department of Geography, University of the Aegean, Mytilene, Greece